Circular warp knitting machine



Nov. 14, 1933. s. F. WAGNER 1,935,490

CIJERCULAR WARP KNITTING momma 7 Filed Dec. 1, 19:50 2 Sheets-Sheet 1 Nov. 14, 1933. s. F. WAGNER CIRCULAR WARP KNITTING MACHINE Filed Dec. 1, 19:50 2 Sheets-Sheet 2 Patented Nov. 14, 1%33 wane r'rnzo mourns Getfloit meant-a Wagner, Russdorf, pear Oberfirohna, Germany Application December 499,336, and in Ge r 1, 1930, -Serial No. December 4, 1929 s c. (or. 66-81) The present invention relates to circular warp butting machines with vertically disposed spring needles, and has for its object to simplifythe construction of the knitting machine and particularly of the driving device for the sinkers.

To attain this object according to the invention, the lapping means are arranged on the side turned away from the hook of the needles, and the threads, by means of special sinkers, are held above the row of needles and positioned thereon when the needles ascend. The simple motion of the sinkers permits a correspondingly simple motion of an annular presser bar which can thus be moved by means of small cranks.

One embodnnent of the invention is illustrated in the accompanying drawings, in which Figure 1 is a vertical axial section of the knitting machine; Fig. '2, a ground plan showing the transmission of motion to the driving cranks for the 4 lapping sinkers; Fig. 3, a detail view of the disposition of'thepresser ring; Figs. 4 to 6 show difierent forms of lapping sinkers; Fig. 7 explains the positioning of the thread on the needles; and Fig. 8 is a top view of Fig. 3.

Referring to the drawings, the lapping sinkers 1 and the thread guides 2 and 3 are arranged on the side away from the hook 4 of the needles 5. The presser member 6 lies opposite thehook 4, and below it the knock over bits or 'web holders 10 are disposed and held in a perfectly stationary and immovable position relative to the machine frame by the carrying ring 11.

The needles 5 are secured to a swaying or reciprocating disc 7 carried by the hub 8 positioned obliquely to the axial direction of the machine, the disc being protected against rotary motion by any suitable device. The hub 8 is driven me-' chanically by the pinion 9 so that a swaying mo- I 16 and 1"! are rotatably arranged on the machine 45 mm and provided-on their outer edge with a.

worm gearing so that they can be driven by the worms 18 and 19. The fingers 20 and mattached to the'arms 14- and 15 and the ring 23;

5 respectively drive during their rotation the rings 22 and 23 rotatably disposed on the machine H frame and carrying the arms24 and-25 forthe warpbeams 26 and 27 whence the warpthreads 28 and 29, over the cushioned thread guides 30 and 31 and the projecting edges 32, 33, 34 provided on the carrying rings 12 and 13 of ,the

thread guides 2 and 3, are fed to the latter.-

The sinkers 1 are radially displaceably positioned in the stationary guide disc and, with their butt 41, engage an annular groove of the rotating cam 42 which overlaps the sinkers so as to prevent their being raised. Furthermore, the ring 42 is disposed on the disc 40 in such a way that, without carrying out a rotary motion, it isdisplaced in a manner permitting all parts of it to describe paths of equal size. For this purpose the cam 42 is provided at two opposite points with a bore 43 engaged by a crank pin 44 carried by the gear 45 or 46, the gear 46 being rotatably positioned on the machine frame 7 by means of the shaft 47' or 48. The shaft 4'7 is rotated in any suitable manner by means of the pair of spur gears 49, and its motion istransmitted by means of the gear 45 to a ring 50 rotatably disposed on the guide disc 40 and adapted to transmit the rotary motion to the gear 46 which thus is caused to rotate in the same direction and at the same speed as thegear 45.

l The crank pins 44 of the gears 45, 46 are therefore" moveduniformly, and this motion is corso respondingly transmitted to the cam 42 whereby the sinkers 1 are displaced so that, at one point carries out merely a reciprocating motion in its groove on the disc 40.

In a manner similar to the one described with reference to the cam 42 of the sinkers 1 the presser member 6 is moved. For this purpose, by means of the arms 52, it is held in position relative to the bearing disc 53-which is also engaged at two opposite points by the crank pins 144 uniformly driven and moved by means of 10 the gears 145, 149 and the toothed ring 150 so that the pressermember .6 is displaced also. on a' curved path. At the point where the member 6 touches the needles 5 the hooks 4 are pressed into their eyes. However, the manner of driving the presser ring 6 as described brings it about that the ring 6, at the pressing point, carries out a motion transverselyto the axis of the needle, which might lead to bending of the hooks 4. In order to hold therefore that portion of the 1.10

I the same or opposite directions.

presser ring 6, which hugs the needles 5, in frictional contact with the needle portions concerned and to prevent the pressing point of the ring 6 from cooperating in the lateral motion of the adjacent portions of the ring 6, a presser ring 60, according to Fig. 3, is inserted loosely rotatably, and guided by rolls if necessary, in the holding ring 6 so that it can carry out a rotary motion within the ring 6. Its inner edge rotates therefore on the needle edges. To free the hooks completely from the lateral stresses due to the presser member, the presser ring could be positively driven so as to rotate in the holding ring 6 while its inner edge rotates on the row of needles. This could be effected in the simplest manner by securing to the presser ring 60 a downwardly extending toothed rim 61 adapted.

moves transversely to and fro through its adjacent needles and the lapping means 2 and 3 carry out a uniform circular motion either in This lapping means refers to two rows of guides arranged in a circle. As the lapping means always remain on the side away from the hooks 4 of the needles 5, they can lap only on the rear side-of the needles, and in order to bring the thread also over the needles, the sinkers 1 are pushed into the needle row at the proper moment to catch with their upper "throat the threads concerned and guide them over the needle heads so that the latter, on their ascent, pass behind the threads and the threads can be positioned on theneedles in this manner (Fig. 'I). The upward motion of the needles must of course be arranged so that the thread portions, which are to remain on the inside of the needle row, cannot be pressed over and beyond the needle heads during the forward motion of the lapping sinkers 1. To make sure of this, the nose of the sinkers 1 projects farther than the nose '71, as shown in Figs. 4 and 5, to keep the thread portions to be held behind the needles below the sinker nose '70 which thus separates the thread portions from those to be placed on the hook side of the needles. These thread portions are seized by the sinkers and pressed over the needle row. As the goods during locking in hug the lower edge 73 of the sinkers 1, an additional nose Z4 besides these already mentioned may be provided on the lapping'sinkers so that the thread portions to be placed on the rear side of the needles can be positioned in the far rearwardly extending throat '75 of the bits between the noses 74 and 70. If

scribed above can be applied not only to circular warp knitting machines in which the needles are secured to a swaying disc, but also to circular warp knitting machines of other types.

The finished goods are drawn oii! upwardly from the underside of the guide ring 40 along the axis of the machine and from the inner edge of the ring 40 so that the lower portion of the ma- 1. In a circular 'warp knitting machine, the

combination of needles arranged in a circle with lapping means, means for driving the said lapping means to insure uniform rotation thereof without causing the said lapping means to pass through the circle oi. needles, and sinkers disposed on the side of the needles opposite to the needle hook and adapted to be adjusted between the, needles and to hold threads brought by their lapping means within reach of the sinkers over the circle of needles after descending, said threads being placed on the hook side 'of the needles during their ascent to form loops.

v2. In a circular warp knitting machine the combination of needles arranged in a circle with lapping means, means for driving the said lappingmeans to insure uniform rotation thereof without causing the said lapping means to pass through the circle of needles, sinkers disposed on the side of the needles opposite to the needle hook and adapted to be adjusted between the needles and to hold threads brought by their lapping means within reach of the sinkers over the circle of needles after descending, said threads being placed on the hook side of the needles during their ascent to form loops. means for moving the needles to place always one needle in highest position and the one oppositely disposed in the circle in lowest position, gradual transition taking place from. the highest to the lowest position and the adjustment of the needles progressing uniformly in the circle, noses forming part of the sinkers. a cam having a circular groove, and means for moving the said cam to cause all parts of it to be moved in paths of equal size.

3. In a circular warp knitting machine according to claim 2, a presser ring disposed on the hook side of the needles, and means for moving the said presser ring, the said presser ring being moved with allits parts in paths of equal size. one point of the inner edge of the said presser ring being always in touch with the needle hooks.

4. In a circular warp knitting machine according to claim 2, a presser ring surrounding the needles, a holding ring adapted to carry the said presser ring and permit slight rotation of the said presser ring. and means for moving the said holding ring and presser ring to cause all parts to move in paths of the same size, one point of the said'presser ring always hugging the hooks of the needles without moving the point transversely to the needle hooks.

5. In a circular warp knitting machine, the combination of needles arranged in a circle with lapping-means moved along the needles only on one side thereof, and sinkers disposed on the same side of the needles as the lappin means and adapted to be adjusted between said needles and to hold threads brought by their lapping means within reach of the sinkers over the circle of needles after descending, said threads being placed by the sinkers on the other side of the needles during ascent to form loops.

GO'I'I'LOB FRIEDRICH WAGNER. 

